Tree-ring dating of recent volcanic ash and Lapilli, Mt Egmont
Tree-ring dating of recent volcanic ash and Lapilli, Mt Egmont
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近期火山灰和埃格蒙特山拉皮利的树木年轮测年
DOI：
10.1080/0028825x.1966.10443951
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发表时间：
1966
影响因子：
0.9
通讯作者：
A. Druce
中科院分区：
文献类型：
--
作者：
A. Druce
摘要 回顾了有关埃格蒙特山近期火山历史的文献。在本报告中，对九个矿床进行了描述、绘图和大致年代测定，这些矿床由过去 500 年来沉积在山上的火山灰和火山灰组成。按地层顺序排列，这些是：Newall Ash、Newall Lapilli、Waiweranui Lapilli、Waiweranui Ash，构成了 Newall 地层，年代约为公元 1604 年； Burrell Ash、Burrell Lapilli、Puniho Lapilli 1、Puniho Lapilli 2，构成了 Burrell 组，年代约为公元 1655 年；塔胡朗吉灰烬 (Tahurangi Ash) 是塔胡朗吉组 (Tahurangi Formation) 的唯一成员，其年代可追溯到公元 1755 年。该年代测定大部分基于树木年轮计数，但也使用了互层泥炭的相对深度。详细讨论了树木年轮测年的误差来源以及将该方法应用于特定灰床所涉及的问题。概述了这座山最近的火山历史。需要对西侧的床进行进一步研究以阐明……
Abstract Previous literature on the recent volcanic history of Mt Egmont is reviewed. In the present account nine beds, constituting the volcanic ash and lapilli deposited on the mountain within the last 500 years, are described, mapped, and approximately dated. In stratigraphic sequence these are: Newall Ash, Newall Lapilli, Waiweranui Lapilli, Waiweranui Ash, constituting the Newall Formation dated about A.D. 1604; Burrell Ash, Burrell Lapilli, Puniho Lapilli 1, Puniho Lapilli 2, constituting the Burrell Formation dated about A.D. 1655; and Tahurangi Ash, the sole member of the Tahurangi Formation dated about A.D. 1755. The dating is based on tree-ring counts for the most part, but relative depths of interbedded peat have also been used. Sources of error in tree-ring dating and the problems involved in applying the method to the particular ash beds are discussed in detail. The recent volcanic history of the mountain is outlined. Further study needs to be made of the beds on the west side to elucidate th...